Can't select and delete an object
Not a bug, no black magic needed to get rid of the object.

What you have is an object that cannot be selected. The selectable switch has been disabled.



Enable that, select the object and delete it!

Those icons on the outliner are toggle switches:

Eye to make the object visible in the viewport.

Arrow for selectability

Camera to enable the object for rendering.

Make yourself a favor and read the manual page for the outliner here: https://www.blender.org/manual/editors/outliner.html